Specialized epithelial junctions — Flashcards

Flashcard 1: Which layer of the epidermis is characterized by keratin in anucleate cells? _____

Answer: Stratum corneum

Flashcard 2: The intermediate filament Cytokeratin is found in _____ cells

Answer: Epithelial

Flashcard 3: What proteins (2) are tight junctions composed of?_____

Answer: Claudins and occludins

Flashcard 4: What is the epithelial lining of the palatine tonsil?

Answer: Non-keratinized stratified squamous epithelium (derived from the 2nd pharyngeal pouch)

Extra: The palatine tonsil develops from the endoderm of the 2nd pharyngeal pouch. While the embryological origin is the 2nd pouch, the histological lining of the tonsillar crypts and surface is non-keratinized stratified squamous epithelium.

Flashcard 5: epithelial linings of oral cavity

Answer: surface ectoderm

Flashcard 6: epidermis

Answer: surface ectoderm

Flashcard 7: parotid, sweat, and mammary glands

Answer: surface ectoderm

Flashcard 8: connective tissue

Answer: mesoderm

Flashcard 9: Where is elastin found in the human body?

Answer: skin, ligaments, vocal cords, lungs, large arteries

Flashcard 10: Type IV collagen is found in what tissues?

Answer: basement membranes mnemonic: Be So Totally Cool, Read Books